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> } > + > +drmModePropertyBlobRes *get_writeback_formats_blob(igt_output_t *output) Please write function documentation comment. > +{ > + drmModePropertyBlobRes *blob = NULL; > + uint64_t blob_id; > + int ret; > + > + ret = kmstest_get_property(output->display->drm_fd, > + output->config.connector->connector_id, > + DRM_MODE_OBJECT_CONNECTOR, > + igt_connector_prop_names[IGT_CONNECTOR_WRITEBACK_PIXEL_FORMATS], > + NULL, &blob_id, NULL); > + if (ret) > + blob = drmModeGetPropertyBlob(output->display->drm_fd, blob_id); > + > + igt_assert(blob); > + > + return blob; > +} > diff --git a/lib/igt_kms.h b/lib/igt_kms.h > index 0381c82ad..9b5a940f7 100644 > --- a/lib/igt_kms.h > +++ b/lib/igt_kms.h > @@ -1280,4 +1280,6 @@ void igt_set_link_params(int drm_fd, igt_output_t *output, > int igt_backlight_read(int *result, const char *fname, igt_backlight_context_t *context); > int igt_backlight_write(int value, const char *fname, igt_backlight_context_t *context); > > +drmModePropertyBlobRes *get_writeback_formats_blob(igt_output_t *output); > + > #endif /* __IGT_KMS_H__ */ > diff --git a/tests/kms_writeback.c b/tests/kms_writeback.c > index e3671c59b..f733f3ce6 100644 > --- a/tests/kms_writeback.c > +++ b/tests/kms_writeback.c > @@ -92,25 +92,6 @@ enum { > XRGB2101010 = 1 << 1, > }; > > -static drmModePropertyBlobRes *get_writeback_formats_blob(igt_output_t *output) > -{ > - drmModePropertyBlobRes *blob = NULL; > - uint64_t blob_id; > - int ret; > - > - ret = kmstest_get_property(output->display->drm_fd, > - output->config.connector->connector_id, > - DRM_MODE_OBJECT_CONNECTOR, > - igt_connector_prop_names[IGT_CONNECTOR_WRITEBACK_PIXEL_FORMATS], > - NULL, &blob_id, NULL); > - if (ret) > - blob = drmModeGetPropertyBlob(output->display->drm_fd, blob_id); > - > - igt_assert(blob); > - > - return blob; > -} > - > static bool check_writeback_config(igt_display_t *display, igt_output_t *output, > drmModeModeInfo override_mode) > {